return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for H3AlO3 (Aluminum hydroxide)

using model chemistry: MP2/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3H 1A'
Energy calculated at MP2/6-31G**
 hartrees
Energy at 0K-469.025999
Energy at 298.15K-469.030153
HF Energy-468.412732
Nuclear repulsion energy160.602522
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at MP2/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3993 3740 0.00      
2 A' 708 663 0.00      
3 A' 643 602 0.00      
4 A" 320 300 462.72      
5 A" 271 254 48.15      
6 E' 3992 3738 115.87      
6 E' 3992 3738 115.87      
7 E' 953 893 149.50      
7 E' 953 893 149.50      
8 E' 672 629 251.40      
8 E' 672 629 251.40      
9 E' 233 218 35.27      
9 E' 233 218 35.27      
10 E" 337 316 0.00      
10 E" 337 316 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 9155.6 cm-1
Scaled (by 0.9365) Zero Point Vibrational Energy (zpe) 8574.2 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at MP2/6-31G**
ABC
0.21462 0.21462 0.10731

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G**

Point Group is C3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Al1 0.000 0.000 0.000
O2 0.000 1.711 0.000
O3 -1.482 -0.855 0.000
O4 1.482 -0.855 0.000
H5 -0.830 2.193 0.000
H6 -1.485 -1.815 0.000
H7 2.314 -0.378 0.000

Atom - Atom Distances (Å)
  Al1 O2 O3 O4 H5 H6 H7
Al11.71091.71091.71092.34492.34492.3449
O21.71092.96342.96340.95973.82593.1176
O31.71092.96342.96343.11760.95973.8259
O41.71092.96342.96343.82593.11760.9597
H52.34490.95973.11763.82594.06154.0615
H62.34493.82590.95973.11764.06154.0615
H72.34493.11763.82590.95974.06154.0615

picture of Aluminum hydroxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Al1 O2 H5 120.167 Al1 O3 H6 120.167
Al1 O4 H7 120.167 O2 Al1 O3 120.000
O2 Al1 O4 120.000 O3 Al1 O4 120.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability